Primary study on finger joints MRI coil and its value in rheumatoid arthritis

VernacularTitle:手指线圈在手指关节类风湿性关节炎MRI 初步研究
Author: Xiubin WANG ; Xianhua WU ; Lemin TANG ; Gangping ZHOU ; Zhanyun DA ; Hongmei JING
Publication Type:Journal Article
Keywords: rheumatoid arthritis; finger joint; magnetic resonance imaging
From: Journal of Practical Radiology 2016;32(4):621-623,628
CountryChina
Language:Chinese
Abstract: Objective To study the MR performances of finger joints with health subjects and rheumatoid arthritis (RA)patients,and to detect the imaging quality of a custom-made finger coil.Methods Finger coil,extremity coil,flexible surface coil and 3 inch surface coil were used to scan the self-made water phantom with similar T2 WI sequence,then the signal to noise ratio (SNR)on single image was measured for the comparison.The middle finger specimen (1 finger)was used for the research,5 healthy volunteers (8 fingers)and 18 RA patients (22 fingers)were also scanned.Results The SNR of finger coil was over 1.5 times higher than that of the 3 inch surface coil and 4 times higher than that of the extremity coil and flexible surface coil.For the 22 fingers with confirmed RA,synovitis was found in 1 7,joint effusion in 10,bone marrow edema in 5,bone erosion in 7 and tenosynovitis in 6.Conclusion The finger coil has higher SNR.